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Transition Constraints for Temporal Attributes

2014

  • Authors:
    Nasubo Ongoma , Maria Keet , Tommie Meyer

    Publication date:
    2014

    Institution:
    CSIR Meraka Institute, UKZN, UCT

    Output type:
    Workshop paper

    Abstract:

    Representing temporal data in conceptual data models and ontologies
    is required by various application domains. For it to be useful for modellers to
    represent the information precisely and reason over it, it is essential to have a language
    that is expressive enough to capture the required operational semantics of
    the time-varying information. Temporal modelling languages have little support
    for temporal attributes, if at all, yet attributes are a standard element in the widely
    used conceptual modelling languages such as EER and UML. This hiatus prevents
    one to utilise a complete temporal conceptual data model and keep track of
    evolving values of data and its interaction with temporal classes. A rich axiomatisation
    of fully temporised attributes is possible with a minor extension to the
    already very expressive description logic language DLRUS. We formalise the
    notion of transition of attributes, and their interaction with transition of classes.
    The transition specified for attributes are extension, evolution, and arbitrary quantitative
    extension.